init: Move uevent handling to an external ueventd process

Change-Id: Iea6c56013062ade633a1754f7bcf8cf09b3dedc1
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 04e3960..8d8955b 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -1,3 +1,5 @@
+on early-init
+    start ueventd
 
 on init
 
@@ -259,6 +261,9 @@
 service console /system/bin/sh
     console
 
+service ueventd /sbin/ueventd
+    critical
+
 # adbd is controlled by the persist.service.adb.enable system property
 service adbd /sbin/adbd
     disabled